diff --git a/tests/wscript b/tests/wscript
index 706697a..6018bdb 100644
--- a/tests/wscript
+++ b/tests/wscript
@@ -19,4 +19,5 @@
         use='ndn-group-encrypt tests-main',
         includes=['.'],
         install_path=None,
+	defines='TMP_TESTS_PATH=\"%s/tmp-tests\"' % bld.bldnode,
         )